In the "for what it's worth" department US Club and US Youth (ie State Associations) will both continue to be around for some time to come. The vast majority of the State Associations particularly in the Easter have very little or no US Club presence whatsoever. Region IV by far has the largest amount of US Club players of any other region. If you want to go by the numbers then I can tell you that US Youth sits at about 3.2 million kids and US Club has around 400,000 at last known estimate of which about 80,000 to 100,000 exist in Northern California alone. US Club sometimes is perceived as being nothing more than a registration/insurance outfit that lets the inmates run the asylum, whilst US Youth Soccer is considered an aniquated organization but with rules and regulations. It is true that US Club has helped bring US Youth into the modern world by providing the competition.
In some ways it is healthy to have a choice whilst in otherways it just tears the game apart, multiple same level leagues in the same town is never a good thing and i'll argue that with anyone..
I think you'll find that both organizations will continue to exist and evolve in their own way, there will be no outright winner... never going to happen. The only people capable of changing that is US Soccer themselves because as members US Youth and US Club must abide by the rules of that organization and therefor if US Soccer want to start dictating how youth soccer should run in this country then all of a sudden it becomes a level playing field and no matter whether you turn to US Club or US Youth and its State ASsociations, in theory the product should be the same, however again I don't see that happening.
Time will tell.